staging: rtl8723bs: fix comparsion to true/false and brace issues

Use if(x) and if(!x) instead of comparsion to true/false.
Reported by checkpatch.

Remove unrequired braces from single if else statement.
Add missing space after else: else{ -> else {

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>